21903790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{24611}}^1$

素因数の和:24707

約数の個数: 16

約数和(自身を含む): 39871440

約数和(自身を除く): 17967650

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 24611, 49222, 123055, 246110, 2190379, 4380758, 10951895, 21903790]

約数ペア:

[(1, 21903790), (2, 10951895), (5, 4380758), (10, 2190379), (89, 246110), (178, 123055), (445, 49222), (890, 24611)]